[Event "Ch Colombia"] [Site "masterchessopen.com - Medellin (Colombia)"] [Date "1977.03.23"] [Round "11"] [White "Castro Oscar H (COL)"] [Black "Herrera Gabriel (COL)"] [Result "0-1"] [WhiteElo "2410"] [BlackElo "2259"] [ECO "A01"] [Opening "Nimzowitsch-Larsen: 1...e5 2.Bb2 Nc6"] 1.b3 e5 2.Bb2 Nc6 3.g3 Bc5 4.Nf3 d6 5.d3 Bg4 6.Bg2 Qc8 7.d4 Bxf3 8.exf3 Nxd4 9.O-O Ne7 10.f4 O-O 11.a4 a6 12.Nd2 f6 13.c3 Ne6 14.b4 Ba7 15.Qb3 Kh8 16.Bxb7 Qxb7 17.Qxe6 Rae8 18.f5 Nd5 {#R} 0-1